title: Clinical trial registration.
authors.forename: R
authors.initials: R
authors.lastname: Watts
authors.forename: S
authors.initials: S
authors.lastname: Cubie
mesh_terms: D002986:Clinical Trials as Topic / Q000379:methods / Q000592:standards*; D016208:Databases, Factual / Q000592:standards; D006801:Humans; D007391:International Cooperation; D012042:Registries; D012107:Research Design; D012219:Rheumatology / Q000592:standards; D014944:World Health Organization